Adrover-Monserrat Bàrbara, García-Vilana Silvia, Sánchez-Molina David, Llumà Jordi, Jerez-Mesa Ramón, Travieso-Rodriguez J Antonio
Universitat Politècnica de Catalunya, Escola d'Enginyeria de Barcelona Est, Av. d'Edurad Maristany, 10-16, 08019 Barcelona, Spain.
Polymers (Basel). 2022 Jul 18;14(14):2914. doi: 10.3390/polym14142914.
. We aim to characterize the viscoelastic behavior of Polyether-Block-Amide (PEBA 90A), provide reference values for the parameters of a constitutive model for the simulation of mechanical behaviors, and paying attention to the influence of the manufacturing conditions. . Uniaxial relaxation tests of filaments of PEBA were used to determine the values of the parameters of a Prony series for a Quasi-Linear Visco-Elastic (QLVE) model. Additional, fast cyclic loading tests were used to corroborate the adequacy of the model under different test criteria in a second test situation. . The QLVE model predicts the results of the relaxation tests very accurately. In addition, the behavior inferred from this model fits very well with the measurements of fast cyclic loading tests. The viscoelastic behavior of PEBA under small strain polymer fits very well to a six-parameter QLVE model.
我们旨在表征聚醚嵌段酰胺（PEBA 90A）的粘弹性行为，为模拟力学行为的本构模型参数提供参考值，并关注制造条件的影响。使用PEBA长丝的单轴松弛试验来确定准线性粘弹性（QLVE）模型的Prony级数参数值。此外，在第二种测试情况下，使用快速循环加载试验来证实该模型在不同测试标准下的适用性。QLVE模型非常准确地预测了松弛试验的结果。此外，从该模型推断出的行为与快速循环加载试验的测量结果非常吻合。PEBA在小应变聚合物下的粘弹性行为与六参数QLVE模型非常吻合。
